*SUPPORT*
IN: zup lug dax lug OUT: PINK RED RED RED
IN: lug gazzer OUT: RED RED
IN: lug tufa dax zup OUT: RED PINK PINK GREEN
IN: lug tufa kiki zup OUT: RED GREEN PINK
IN: tufa kiki tufa OUT: GREEN GREEN
IN: wif OUT: BLUE
IN: zup gazzer OUT: PINK PINK
IN: tufa gazzer OUT: GREEN GREEN
IN: wif zup dax tufa OUT: BLUE GREEN GREEN PINK
IN: zup lug OUT: PINK RED
IN: tufa dax zup OUT: PINK PINK GREEN
IN: zup kiki tufa OUT: PINK GREEN
IN: zup zup kiki wif OUT: PINK PINK BLUE
IN: lug dax tufa OUT: GREEN GREEN RED

*QUERY*
IN: wif kiki tufa OUT: BLUE GREEN
IN: wif gazzer OUT: BLUE BLUE
IN: zup dax zup OUT: PINK PINK PINK
IN: wif kiki lug OUT: BLUE RED
IN: wif kiki zup OUT: BLUE PINK
IN: tufa OUT: GREEN
IN: zup dax tufa OUT: GREEN GREEN PINK
IN: wif kiki wif OUT: BLUE BLUE
IN: zup dax lug OUT: RED RED PINK
IN: wif dax zup OUT: PINK PINK BLUE

*GRAMMAR*
lug -> RED 
 tufa -> GREEN 
 wif -> BLUE 
 zup -> PINK 
 u1 kiki u2 -> [u1] [u2] 
 u1 dax u2 -> [u2] [u2] [u1] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 